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 $FF48/65352:   IRQ Entry

FF48: 48        <A HREF="BPHA.HTM">PHA</A>
FF49: 8A        <A HREF="BTXA.HTM">TXA</A>
FF4A: 48        <A HREF="BPHA.HTM">PHA</A>
FF4B: 98        <A HREF="BTYA.HTM">TYA</A>
FF4C: 48        <A HREF="BPHA.HTM">PHA</A>
FF4D: BA        <A HREF="BTSX.HTM">TSX</A>
FF4E: BD 04 01  <A HREF="BLDA.HTM">LDA</A> <A HREF="ZP0100.HTM">$0104</A>,X   ; 6510 Hardware Stack Area
FF51: 29 10     <A HREF="BAND.HTM">AND</A> #$10
FF53: F0 03     <A HREF="BBEQ.HTM">BEQ</A> $FF58
FF55: 6C 16 03  <A HREF="BJMP.HTM">JMP</A> (<A HREF="ZP0316.HTM">$0316</A>)   ; Vector: BRK Instruction Interrupt Address

Jump from $FF53:

FF58: 6C 14 03  <A HREF="BJMP.HTM">JMP</A> (<A HREF="ZP0314.HTM">$0314</A>)   ; Vector: Hardware IRQ Interrupt Address

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